Spark-arrester.



PATENTED AUG. 29, 1905.

J. KEELIN. SPARK ARRESTER.

APPLICATION FILED AUG.17,1904.

2 SHEETS-SHEET l.

www woe@ Annniw. s. Gamm co. Puovomwouumusns, wAsmNGwn, n cv PATBNTED AUG.'29,1905

. J. KEELIN.

SPARK ARRESTBR.

APPLICATION FILED AUG. 17, 1904.

2 SHEETS-SHEET 2.

UNITED STATES PATENT OFFICE.

SPARK-ARRESTER Specification of Letters Patent.

Patented Aug. 29, 1905.

Application filed August 17, 1904. Serial No. 221,113.

To all whom, it may concern.-

Be it known that I, MICHAEL J. KEELIN, a citizen of the United States, residing at Hilo, in the Territory of Hawaii, have invented certain new and useful Improvements in Spark- Arresters; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to spark-arresters, and while being particularly designed for use in connection with a locomotive smoke-stack it will be understood that it may be elsewhere employed.

The object of the invention is to provide a construction wherein the sparks will be caused to travel againsta friction-surface to extinguish them and will be then deposited in the base of the stack, from which they may be drawn.

Other objects and advantages of the invention have reference to details of structure, as will be understood from the following description.

In the drawings forming a portion of this specification, and in which like numerals of reference indicate similar parts in the several views, Figure 1 is a section taken vertically through the smoke-stack having the present invention therein. Fig. 2 is a view showing the spark-receiving table and the frictionband encircling it and spaced from it. Fig. 3 is a detail view of the deiiector. Fig. 4 is a transverse section through the stack above the deflector.

Referring now to the drawings, there is shown a locomotive smoke-stack, including the usual base 5, which is secured upon the smoke-box and from which rises the cylindrical vpipe-section 6, the upper portion of which is expanded to form the head 7, in which is contained the spark-arrester. In the base 5 is engaged the smoke-pipe 8, which communicates at its lower end with the smokebox and the upper end of which terminates in the broadened or expanded portion of the head 7.

Within the head 7 are secured the brackets 9, upon which is bolted a disk-shaped plate 10, forming a table, this plate having acentral opening 11, in which the upper end of the pipe 8 is engaged.

An inverted conical deflector 12 is disposed above the table 10 with its apex arranged centrally above the pipe 8, and the face of this deflector is concaved, as illustrated, and is provided with ribs 13, which beginning at the center of the deflector progress spirally to the periphery thereof, so that the smoke and sparks when they leave the pipe 8 and strike the deiiector are whirled from the outer edge thereof.

The table 10 is of greater diameter than the deiiector, and concentric with the table and spaced slightly from its periphery is a wall 14, which rises above the deflector. The wall 14 is a friction-stop for the cinders, which when they leave the deilector strike the friction-wall at a sharp angle thereto and pass along it in contact with it sufficiently far to extinguish the sparks, the cinders falling between the wall and the edge of the table and in the lower portion of the stack, from which they may be drawn through the pipe 15. It will be noted that the friction-wall 14 is supported upon the brackets 9.

To prevent egress from the top of the casing of any sparks or cinders that may pass upwardly of the wall 14, a screen 16 is secured to the upper edge of the wall and covers the inclosure of the wall, and as a further precaution a frusto-conical screen 17 is engaged in the upper end of the stack.

What is claimed is- 1. The combination with a smoke-stack comprising an outer casing having a screened outlet-opening in its top, and a smoke-pipe extending. upwardly through its lower end, of a table supported in the upper portion of the stack and having a central opening in which the smoke-pipe terminates, a vertical wall encircling the table and spaced therefrom, a dellector constructed and arranged to deflect cinders from the smoke-pipe against the wall, a screen supported upon the wall, and an outlet-pipe at the lower portion of the stack.

2. The combination with a smoke-stack comprising an outer casing having a screened outlet-opening in its top, and a smoke-pipe extending upwardly through its lower end,

IOO

of a table supported in the upper portion of by the Wall, and an outlet-pipe at the bottom the stack and having a central opening with of the stack. l0 which the smoke-pipe engages, a Vertical Wall In testimony Whelr'eotl IaHX my signature in encircling the table and spaced therefrom and presence of two Witnesses.

5 the aforesaid casing,adeectorarranged above MICHAEL J. KEELIN.

tbe smoke-pipe to deect cinders from the lat- Witnesses: ter against the wall, the under face of the de= RODERICK W. MCLEOD, fiector being roughened, a screen supported IRA E. RAY. 

